in reply to Best way to dynamically use a .pm?

Use require:

c:\test>type dealer\*.pm
dealer\x.pm
package config;
our $dealer = 'x';

dealer\y.pm
package config;
our $dealer = 'y';

dealer\z.pm
package config;
our $dealer = 'z';

c:\test>perl -E"my $p=shift; require qq[dealer/$p.pm]; say $config::de
+aler" x
x

c:\test>perl -E"my $p=shift; require qq[dealer/$p.pm]; say $config::de
+aler" y
y

c:\test>perl -E"my $p=shift; require qq[dealer/$p.pm]; say $config::de
+aler" z
z

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